Mengel, Metzger, Barr & Co., LLP data breach
Incident readout
- Company
- Mengel, Metzger, Barr & Co., LLP
- Reported to
- New Hampshire Attorney General
- Filed
- July 21, 2025
- People affected
- Not stated in the filing
- Incident type in filing
- Not stated
- Our review
- Investigation Open
Was this a ransomware attack?
The filing does not say ransomware was involved. We do not label an incident ransomware unless the company’s report says so. Whatever the cause, the steps to protect yourself and the legal question are the same.
What we know
Mengel, Metzger, Barr & Co., LLP is a professional services firm specializing in accounting, auditing, and tax advisory services. As a firm that handles sensitive financial and tax-related matters, they typically collect and store highly confidential information, including Social Security numbers, tax returns, and detailed financial account records. This data breach was officially reported to the New Hampshire Attorney General in 2025, confirming that unauthorized access to their systems occurred. If you received a data breach notification letter from the firm, it indicates that your personal or financial information was likely contained within the affected files. We recommend reviewing the letter carefully to understand the specific scope of the exposure and the identity monitoring services being offered to you.
See every breach reported in New Hampshire or read what to do after a ransomware attack.
After the Mengel, Metzger, Barr & Co., LLP incident: what to do and your options
- What should I do after getting the Mengel, Metzger, Barr & Co., LLP data breach notice?
- Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
- Did Mengel, Metzger, Barr & Co., LLP offer free credit monitoring?
- Any free monitoring Mengel, Metzger, Barr & Co., LLP is offering will be described in the notice you received, along with an activation code and a sign-up deadline. Signing up doesn't waive any legal rights you may have.
- Can I sue Mengel, Metzger, Barr & Co., LLP over the data breach?
- It depends on what was exposed, the law in New Hampshire and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
- Do I need a Mengel, Metzger, Barr & Co., LLP data breach lawyer or attorney?
- Whether the company's systems were encrypted by ransomware or data was simply taken, the legal question is the same: did it protect your information the way the law requires? An attorney can review your notice for free, and these cases are usually handled on contingency.
- Is there a Mengel, Metzger, Barr & Co., LLP data breach class action lawsuit?
- Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Mengel, Metzger, Barr & Co., LLP. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
- Is the Mengel, Metzger, Barr & Co., LLP data breach letter legit or a scam?
- A notice from Mengel, Metzger, Barr & Co., LLP in the mail matches the breach Mengel, Metzger, Barr & Co., LLP reported to the New Hampshire Attorney General on July 21, 2025. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Mengel, Metzger, Barr & Co., LLP through a phone number or website you find yourself.
- How much could a Mengel, Metzger, Barr & Co., LLP data breach settlement or claim be worth?
- There is no set amount, and no Mengel, Metzger, Barr & Co., LLP settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. Keep receipts and records; they're what damages claims are built on.
Other breaches reported in New Hampshire
- Janome America, Inc.New Hampshire Attorney General · Filed July 31, 2026Count not stated
- Sullivan Environmental ServicesNew Hampshire Attorney General · Filed July 31, 2026Count not stated
- City of New Britain, Inc.New Hampshire Attorney General · Filed July 30, 2026Count not stated
- New Hampshire Housing Yardi’s RentCafeNew Hampshire Attorney General · Filed July 30, 2026Count not stated
- Pocket FMNew Hampshire Attorney General · Filed July 30, 2026Count not stated
- Werth Wealth Management, LLCNew Hampshire Attorney General · Filed July 29, 2026Count not stated
Attorney advertising. This page reflects a public regulator filing; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.